Cold-saw cutting-off machine.



N0. 630,72l. Patented Aug. 8, I899. W. H. LUCAS.

COLD SAW CUTTING OFF MACHINE.

(Application filed Oct. 14, 1898.

[No Model.)

In: unnms PETERS co, PHOTO-Lumen WASNINGTON. n. c.

No. 630,72l. Patented Aug. 8, I899.

w. H. LUCAS.

COLD SAW CUTTING OFF MACHINE.

(Application filed Oct. 14, 1898.) (No Model.) 2 Sheets-Sheet 2 THE uonms PETERS c0. FNOTO-L\THO.. wnsumarcm 0. c4

UNI-ran STATES PATENT Orricn.

VILLIAM ll. LUCAS, OF PHILADELPHIA, PENNSYLVANIA, ASS IGNOR TO HIM- SELF, FREDERICK II. GL IEM, AND JOHN P. MATHIEU, OF SAME PLACE.

COLD-SAW CUTTING-OFF MACHINE.

SPECIFICATION forming part of Letters PatentNo. 630,721, dated August 8, 1899.

Application filed October 14, 1838. Berial No. 693,521. (No model.) I I i To aZZ whom it may concern: to the clutch 12 by means of spur-gears 19, Be it known that 1, WILLIAM H. LUCAS, a 20, and 21, the gear 19 being secured to the citizen of the United States, residing in Philshaft 10 and the gear 21 havingahub adapted adelphia, Pennsylvania, have invented certo engage with a friction-cup which forms 55 rain Improvements in Cold-Saw Cutting-01f part of the clutch. Al l of these parts are Machines, of which the following is a specisubstantially similar to those used in coldfication. saw cutting-off machines of ordinary con- One object of my invention is to so construct struction, the novel features of my invention acold-saw cutting-off machine thatitis adapt comprisingthe means for mounting and op- 60 ed for acting upon either plates, shafts, rods, erating the friction-disk 18 and the special beams, or shapes and can cut said beam construction and disposition in respect to the or shape at any desired point in its length, saw of the parts of the work-supporting table a further object being to apply power to the or bed. The latter comprises three partsfeed-screw more effectively than usual during namely, the fiat bed 22 for receiving sheets 65 the forward movement of the saw-carriage or plates, the V-shaped groove or recess 23 when the saw is making its out. These ob for receiving shafts or rods, and the depressed jects I attain in the manner hereinafter set table or shelf 24 for receiving beams or other forth, reference being had to the accompanyshapes, said table or shelf 24 being disposed ing drawings, in which- V, 'on the near side of the flat bed 22that 70 Figure 1 is a front view of a cold-saw cutis to say, the side which the saw first apting-off 'machine constructed in accordance proaches in its forward cutting movement. with my invention. Fig. 2 is a plan view of The fiat table or bed 22 is provided with a the same, and Fig. 3 is a front View showing clamping-yoke 25, the grooved work-holder the beam-supporting table or shelf and clamp. 23 with a clamping-yoke 26, and the table or 7 25 1 represents the fixed bed of the machine, shelf 24 with a clamping-yoke 27, these yokes which constitutes a guide for the saw-carbeing under control of nuts 28 and 29 on riage 2, the saw 3, which may be either toothed screws 30, 31, 32, and 33, projecting upwardly or plain, being mounted upon a spindle 4, from the fixed structure of the machine, and which is driven by means of spur-gears 5 and in order that either clamping-yoke may be 8o 0 6 from a parallel spindle 7, the latter having operated independently of the others the a worm-wheel 8, which meshes with a worm yoke 27 is hung to the screw 30 and has an 9 on the driving-shaft 10 at the front of the open jaw 34 for embracing the screw 31. The machine, this worm being mounted in albmg yoke 26 is hung to the screw 33 and .has an on the carriage 2 and being free to travel open jaw 35 for embracing the screw 32, and 5 along the driving-shaft as said carriage is rethe yoke 25 has at one end an open jaw 36, ciprocated. The feed-screw 11 of the carembracing the screw 31, and at the otherend riage 2 is operated by'a clutch 1 2, which is una similar but oppositely-facing open jaw 37, der control of a lever 13, havinga rod 14 proembracing the screw 32. By reason of this jecting alongside of the bed 1 and adapted to construction, therefore, the yokes 26 and 27 40 be struck by a projection on the carriage 2, can be thrown out of engagement with the so as to throw the clutch out of operation ,screws 31 and 32 when it is desired to operwhen the carriage reaches the limit of 'its ate the yoke 25, and the latter can be thrown movement in either direction, the clutch beout of engagement with the screw 31 when it ing driven at slow speed during the forward is desired to operate the yoke 27 orout of en- 45 or cutting movement of the carriage and at gagement with the screw 32 when itis desired higher speed during the return movement. to operate the yoke 26. The yokes are also The slow-speed movement is derived from provided, by preference, with adjustable a worm-wheel 15, which meshes with a worm clamp-screws 38, as shown. on a transverse shaft 16, driven from the By locating the beam-supporting table or 50 shaft 10 by means of friction-disks 17 and 18, shelf 24 on the near side of the table or bed 22 the quick or return movement beingimparted a beam can be disposed on said table or shelf 24. at any desired angle, as shown, for in stance, by dotted lines in Fig. 2, and can therefore be out off at any desired angle in respect to the longitudinal line of the beam and at any desired point in its length, and in this respect my invention is an improvement upon that class of machines which have been proposed and in which the beam-supporting table or shelf was at the far side of the flat bed 22, for in the latter case the beam had to be disposed at an angle the reverse of that shown in Fig. 2, and hence could not be out at an angle at a point remote from either end, as the projecting portion of the beam in such case came into contact with the saw-carriage before the completion of the cut. Therefore in operating this class of machines it became necessary to make two cutsfirst, a cut directly across the beam, so as to reduce the length of the same to the desired extent, and then an angular cut on the slightly-projecting end of the beam, thus involving not only waste of time, but loss of material.

The periphery of the friction-disk 18 bears agianst the flat face of the friction-disk 17 on the driving-shaft 10. Hence by moving said friction-disk 18 to and fro across the face of the disk 17 the speed of the workshaft 16 may be increased or diminished, or said shaft may be stopped altogether by adjusting the disk 18 so that it coincides with the axis of the disk 17. Such movement of the disk 18 and shaft 16 is effected by means of a lever 40, hung to a suitable stud on the fixed frame of the machine and slotted for engagement with a pin 41 011 a rod 42, which is guided in suitable fixed bearings and has a fork 43 engaging with the grooved hub of the disk 18, as shown in Fig. 2. By reason of this construction change of speed and power is effected by movement of the driven disk in a direction parallel with its shaft, this being a more effective plan than that which has hitherto been adopted, which involves the movement of the driven disk in a direction at right angles to the axis of its shaft.

Having thus described my invention, I

4 claim and desire to secure by Letters Patwith a work-table having a flatbed and a beam supporting table or shelf on the near side of said table or bed and below the work-table, substantially as specified.

2. The combination in a cold-saw cuttingoif machine, of the traveling saw-carriage with a work-table or bed comprising a flat portion, a beam-receiving table or bench on the near side of and below the same, and a shaft-receiving groove on the far side, substantially as specified.

3. The combination of the work-table or bed comprising a fiat table flanked by a beam-receiving table or shelf, and a shaft-receiving groove, the upright clamp-screws, a central clamping-yoke having notched jaws at each end for engagement with said clampingscrews, and outer clamp-yokes pivoted at their outer ends to the outer clamp-screws and having at their inner ends notched jaws for engagement with the inner clamp-screws, substantially as specified.

1. The combination in a cold-saw cuttingoff machine, of the feed-screw, the drivingshaft having a driving friction-disk at the end, a transverse shaft having a driven friction-disk with peripheral bearing upon the face of the driving friction-disk, means for moving said shaft in a direction parallel with its axis, and gearing whereby said shaft is caused to operate the feed-screw, substantially as specified.

5. The combination in a cold-saw cuttingolfmachine, of the feed-screw, the drivingshaft having a driving friction-disk at the end, a driven friction-disk having peripheral bearing upon the face of said driving frictiondisk, and mounted upon ashaft movable longitudinally in its bearings, a guided rod having a yoke engaging with the hub of said disk, a lever for moving said rod, and gearing whereby said shaft is caused to operate the feed-screw, substantially as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

W'M. II. LUCAS.

\Vitnesses:

F. E. BECHTOLD, .Tos. II. KLEIN. 

